The following images were found in Dietrich’s archives and were from Mr. Al Rickli
A Sempert & Krieghoff sidelock Neptune Drilling no. 11063 proofed in 1927 in 16 x 16 x 8/57JR
S. & K. no. 11063Sempert & Krieghoff Sidelock Neptune Drilling no. 14032 proofed in 1930 in cal. 16 x 16 x 8/72RS. & K. no. 14032Sempert & krieghoff Neptune Drilling no. 200506 proofed in 1938 in cal. 12 x 12 x 8/57JR
S. & K. no. 200506Sempert & Krieghoff Neptune side lock drilling no. 13750 in 20 ga. x 20 ga. x 7/57R with game scene engraving, detachable trigger group and clam shell type action, proofed in 1929S. & K. no. 13750S. & K. no. 13750Sempert & Krieghoff Neptune standard serial no. 19106 in 16 ga. x 16 ga. x 7/57R proofed in 1939S. & K. no. 19106S. & K. no. 19106
The following image is courtesy of James D. Julia Auctions.